Results/Photos

Date: Sept. 27, 2026 Participant: Isabelle Flinn #20032 Race: 2026 Boulderthon Half Marathon Distance: 13.1 miles

Steady Pace Yields a Strong Closing Kick Isabelle Flinn finished the half marathon in 1:44:30, holding a tight band of splits between 7:31 and 8:19 per mile throughout. After settling into an 8:00-8:05 pace through the middle miles, she surged over the final two miles, covering miles 12 and 13 in 7:31 and 7:36her fastest sustained stretch of the race and a strong close to a well-paced effort. Her ninth and tenth miles, run at roughly 7:56-8:12 pace, would have carried her past the lululemon Power-Up Zone near mile 9.5 of the half course. That consistency came at Boulder's altitude of over 5,000 feet, adding context to her even effort across the 13.1-mile route into downtown Boulder's Pearl Street Mall finish.